Abstract

In large liquid crystal displays, the image quality in an oblique viewing direction is a crucial issue. From this perspective, 8-domain polymer-stabilized vertical alignment (PS-VA) mode has been developed to suppress the color shift in oblique viewing directions, compared to that in 4-domain PS-VA mode. To realize the 8-domain PS-VA, the four domains in a pixel are each divided into two regions, such that applying different electric potentials result in different tilt angles in these two regions, while keeping four azimuthal directions in each domain. However, applying different voltages in a pixel causes drawbacks, such as requiring additional processes to construct a capacitor and a transistor, which will further reduce the aperture ratio. Here we propose a different approach to form the 8-domain, by controlling surface polar anchoring energy and the width of patterned electrodes in two regions of a pixel. As a result, the gamma-distortion index (GDI), measured at an azimuthal angle of 0°, is reduced by about 23% and 8%, compared to that of a conventional 4-domain at polar angles of 30° and 60° respectively.

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  2. M. Oh-e and K. KondoElectro-optical characteristics and switching behavior of the in-plane switching modeAppl. Phys. Lett.19956738953897
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  26. S. J. Kim, K. C. Shin, H. Kim, H. G. Oh, J. Jung, and H. S. KimDevelopment of a resistivity division driving method for the vertically placed RGB pixels of the eight-domain thin-film-transistors liquid crystal displayJ. Inf. Disp.2013149396
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  28. J. H. Kim, W. S. Kang, H. S. Choi, K. Park, J. H. Lee, S. Yoon, S. Yoon, G. D. Lee, and S. H. LeeEffect of surface anchoring energy on electro-optic characteristics of a fringe-field switching liquid crystal cellJ. Phys. D: Appl. Phys.201548465506
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  30. K. Takatoh, M. Hasegawa, M. Koden, N. Itoh, R. Hasegawa, and M. SakamotoLiquid Crystals Book SeriesTaylor & FrancisLondon20053032Alignment technologies and applications of liquid crystal devices, Chapter 2.2.3, Alignment mechanisms
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Other (32)

R. A. SorefField effect in nematic liquid crystals obtained with interdigital electrodesJ. Appl. Phys.19744554665468

M. Oh-e and K. KondoElectro-optical characteristics and switching behavior of the in-plane switching modeAppl. Phys. Lett.19956738953897

S. H. Lee, S. L. Lee, and H. Y. KimElectro-optic characteristics and switching principle of a nematic liquid crystal cell controlled by fringe-field switchingAppl. Phys. Lett.19987328812883

S. H. Hong, I. C. Park, H. Y. Kim, and S. H. LeeElectro-optic characteristic of fringe field switching mode depending on rubbing directionJapan. J. Appl. Phys.2000L5275339L527530

S. H. Lee, S. M. Lee, H. Y. Kim, J. M. Kim, S. H. Hong, Y. H. Jeong, C. H. Park, Y. J. Choi, J. Y. Lee, J. W. Koh, and H. S. Park18.1”Ultra-FFS TFT-LCD with super image quality and fast response timeSID Int. Symp. Dig. Tech. Pap.200132484487

A. Takeda, S. Kataoka, T. Sasaki, H. Chida, H. Tsuda, K. Ohmuro, T. Sasabayashi, Y. Koike, and K. OkamotoA super-high image quality multi-domain vertical alignmentLCD by new rubbing-less technologySID Int. Symp. Dig.Tech. Pap.19982910771080

K. H. Kim, K. Lee, S. B. Park, J. K. Song, S. N. Kim, and J. H. SoukDomain divided vertical alignment mode with optimized fringe field effectProc. of the 18th International Display Research Conference/Asia DisplaySheraton Walker-Hill, Korea1998Sept.383386

Y. Taniguchi, H. Inoue, M. Sawasaki, Y. Tanaka, T. Hasegawa, T. Sasaki, Y. Koike, and K. OkamotoAn ulta-high-quality MVA-LCD using a new multi-layer CF resin spacer and black-matrixSID Int. Symp. Dig. Tech. Pap.200031378381

S. Kataoka, A. Takeda, H. Tsuda, Y. Koike, H. Inoue, T. Fujikawa, T. Sasabayashi, and K. OkamotoA new MVA-LCD with jagged shaped pixel electrodesSID Int. Symp. Dig. Tech. Pap.20003110661069

Y. Yamada, K. Miyachi, M. Kubo, S. Mizushima, Y. Ishii, and M. HijikigawaFast response and wide-viewing angle technologies for LC-TV application9th Int. Display WorkshopsHiroshima, Japan2002203206

M. Yoshiga, M. Fukumoto, Y. Hamawaki, T. Unate, and T. SunataControl of the LC orientation in a vertical alignedAMLCD with didived domains7th Int. Display WorkshopsKobe, Japan2000211214

K. H. Kim, J. J. Ryu, S. B. Park, J. K. Song, B. W. Lee, J. S. Byun, and J. H. SoukCurrent status and advance in PVA technology for high performance LCD monitor application1st Int. Meeting on Information DisplayDaegu, Korea20015861

S. I. Jun, W. Y. Park, I. G. Kim, J. Y. Lee, and J. H. SoukPanel transmittance analysis of PVA mode and a nobel pixel designSID Int. Symp. Dig. Tech. Pap.200233208211

Y. Kume, N. Yamada, S. Kozaki, H. Kishishita, F. Funada, and M. HijikigawaAdvanced ASM mode (Axially symmetric aligned microcell mode): Improvement of display performances by using negative dielectric liquid crystalSID Int. Symp. Dig. Tech. Pap.19982910891092

S. G. Kim, S. M. Kim, Y. S. Kim, H. K. Lee, and S. H. LeeStabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogenAppl. Phys. Lett.200790261910

S. M. Kim, I. Y. Cho, W. I. Kim, K. U. Jeong, S. H. Lee, G. D. Lee, J. Son, J. J. Lyu, and K. H. KimSurface-modification on vertical alignment layer using UV-curable reactive mesogensJapan. J. Appl. Phys.200948032405

R. Lu, S. T. Wu, and S. H. LeeReducing the color shift if a multidomain vertical alignment liquid crystal display using dual threshold voltagesAppl. Phys. Lett.200892051114

K. H. Kim, N. D. Kim, D. G. Kim, S. Y. Kim, J. H. Park, S. S. Seomun, B. H. Berkeley, and S. S. KimA 57-in. wide UXGA TFT-LCD for HDTV applicationSID Int. Symp. Dig. Tech. Pap.200435106109

S. S. KimSuper PVA sets new state-of-the-art for LCD-TVSID Int. Symp. Dig. Tech. Pap.200435760763

S. S. Kim, B. H. Berkeley, K. H. Kim, and J. K. SongNew technologies for advanced LCD-TV performanceJ. Soc. Inf. Disp.2004124760763

S. S. KimThe world’s Largest (82-in.) TFT-LCDSID Int. Symp. Dig. Tech. Pap.20053618421847

S. B. Park, J. J. Lyu, Y. S. Um, H. W. Do, S. N. Ahn, K. W. Choi, K. H. Kim, and S. S. KimA novel charge-shared S-PVA technologySID Int. Symp. Dig. Tech. Pap.20073612521254

Y. P. Huang, W. K. Huang, C. H. Tsao, J. J. Su, H. L. Hou, L. Liao, C. Y. Lee, T. R. Chang, Y. C. Lin, and P. L. ChenAdditional refresh technology (ART) of advanced-MVA(AMVA) mode for high quality LCDsSID Int. Symp. Dig. Tech. Pap.20073810101013

S. S. Kim, B. H. Berkeley, and T. KimAdvancements for highest-performance LCD-TVSID Int. Symp. Dig. Tech. Pap.20063719381941

S. S. Kim, B. H. You, J. H. Cho, D. G. Kim, B. H. Berkeley, and N. D. KimAn 82-in. ultra-definition 120-Hz LCD TV using new driving scheme and advanced Super PVA technologyJ. Soc. Inf. Disp.20091727178

S. J. Kim, K. C. Shin, H. Kim, H. G. Oh, J. Jung, and H. S. KimDevelopment of a resistivity division driving method for the vertically placed RGB pixels of the eight-domain thin-film-transistors liquid crystal displayJ. Inf. Disp.2013149396

X. Nie, R. Lu, H. Xianyu, T. X. Wu, and S. T. WuAnchoring energy and cell gap effects on liquid crystal response timeJ. Appl. Phys.2007101103110

J. H. Kim, W. S. Kang, H. S. Choi, K. Park, J. H. Lee, S. Yoon, S. Yoon, G. D. Lee, and S. H. LeeEffect of surface anchoring energy on electro-optic characteristics of a fringe-field switching liquid crystal cellJ. Phys. D: Appl. Phys.201548465506

K. Hanaoka, Y. Nakanishi, Y. Inoue, S. Tanuma, Y. Koike, and K. A. OkamotoA new MVA-LCD by polymer sustained alignment technologySID Int. Symp. Dig. Tech. Pap.20043512001203

K. Takatoh, M. Hasegawa, M. Koden, N. Itoh, R. Hasegawa, and M. SakamotoLiquid Crystals Book SeriesTaylor & FrancisLondon20053032Alignment technologies and applications of liquid crystal devices, Chapter 2.2.3, Alignment mechanisms

M. Stokes, M. Anderson, S. Chandrasekar, and R. MottaA standard default color space for the internet: sRGB 4th IS&T/SID Color ImagingConf.Arizona,USA1992238246

B. J. Mun, T. Y. Jin, G. D. Lee, Y. J. Lim, and S. H. LeeOptical approach to improve the γ curve in a vertical-alignment liquid-crystal cellOpt. Lett.201338799801

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